Measurement
Help!
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| Why is measurement so important? | Without measurement it would be difficult
for scientists to carry out experiments or
form theories
Measurement is used for quality control,
safety, design and problem solving
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| what is length | Length is a measure of how long an object is
or the distance between two points
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| what is the Standard Unit of length | The standard unit (SI) for length is the
metre
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| what are the other units for length | Other units for length include:
Centimetre (cm)
Millimetre (mm)
Kilometre (km)
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| convert 10cm to mm | 100mm
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| convert 100mm to cm | 10cm
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| convert 1000mm to m | 1m
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| convert 0.56m to cm | 56cm
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| what instruments are used to measure the length of a straight line | Metre stick (large lengths)
Ruler
Measuring tape
Trundle wheel(large lengths)
Vernier Callipers (diameter)(balls)
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| what errors can be made when measuring length | Zero error
When the scale on the
metre stick does not start
at zero
Error of parallax
When the scale is read
from the wrong angle
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| what Instrument ares used to measure the length of a curved lined | Opisometer
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| what is area | Area is the amount of surface enclosed
within its lines
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| how do you Measure the area of a regular shaped object | you multiply the length by the width
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| Measuring area of an irregular shaped object | To calculate the
area of an irregular
shaped object, you
draw the object on
special graph paper
Each square on the
graph paper is 1cm
by 1cm or 1cm²
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| what is volume | The amount of space that an object takes up
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| how do you Measure the volume of a regular shaped object | To calculate the
volume of a regular
shape you multiply
the length by the
width by the height
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| what is the Standard unit (SI) of area | The standard unit (SI) for area is the m²
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| what is the standard unit (SI) of volume | The standard unit
(SI) for volume is
the m³
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| with what and how do you Measure the volume of a liquid | To calculate the
volume of a liquid,
you can use an
graduated cylinder
You must read:
From the bottom of
the meniscus (curved
line)
At eye level
in order to get an
accurate reading
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| with what do you Measure volume of an irregular shaped object | To calculate the volume of an irregular
shaped object, you can use an overflow can
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| what is mass | The amount of matter in an object
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| what is the standard unit (SI) for mass | The standard unit (SI) for mass is the
kilogram(Kg)
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| what is mass commonly measured in | Mass is commonly measured in grams (g)
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| what Instrument are used to measure mass | Electronic balance/scales. It can also be called a mass balance/scales
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| what is temperature | A measure of how hot or cold an object is
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| what is the standard unit (SI) of temperature | The standard unit (SI) for temperature is
the Kelvin (K)
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| what is temperature also measured in | Temperature is commonly measured in
Degrees Celsius (°C)
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| what is the instrument used to measure temperature | Thermometer
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| what is the standard unit(SI) of time | The standard unit (SI) for time is the
second (S)
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| what are other units of Time | Other units of time include minutes(mins)
and hours(hrs)
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| what Instrument is used to measure time | Timer/stopwatch
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